If we wanted to give a technical name for it, isobutane would be 2-methylpropane.

果我们想给它一个技术名称， 烷就是 2-甲基丙烷。

This is called isobutane or i-butane.

这称烷烷。

For example, n-butane boils at -0.5 degrees Celsius while isobutane boils at -11.7 degrees Celsius.

例，正烷的沸 -0. 5 氏度， 而烷的沸 -11. 7 氏度。

Earlier, I introduced you to isobutane, a compound with four carbons that are not all in a chain.

早些时候，我向您介绍了烷， 这是一种具有四个碳原子的化合物， 这些碳原子并不全部位于链中。

So the number of atoms is butane only allows for 2 isomers, n-butane and isobutane.

所以原子数是烷只允许2种构体， 正烷和烷。

They call that isobutane and it is an isomer of butane, but according to these all important rules of nomenclature, it's not actually any sort of butane at all.

他们称其烷， 它是烷的构体，但根据所有重要的命名规则， 它实际上根本不是烷。